Originally Posted By: The Critic
Originally Posted By: Cory
Yeah, they say platinum spark plugs can go 100K, which they can, but with great loss of efficiency.
As for the water pump, I'm not sure where the difference lies if it timing belt driven or not? It is highly suggested to replace mine @ 100K when I replace the timing belt. Why pay for the labor again when it's right there? Otherwise you risk the chance of it going before the next 100K or 90K in a previously mentioned post.
For me, it's < $100 now instead of another $400-500 later.
I know of a lot of people who get 100k+ out of the platinum or iridium long life plugs and still get good mileage toward the end of the rated life.
Japanese water pumps (not your Chinese A1Cardone one) cost about $100-$150. If the pump is not driven by the timing belt and is driven by an accessory belt, it could be replaced in under an hour. Why spend the extra $150 and additional 1/2 hour labor at $100-$150/hr during the timing belt job if the pump is still okay?
My upcharge for the pump & labor was $120. Which seemed reasonable to me versus having to go back in if the pump failed. BTW I have 137k on the factory plugs and no change in mileage. The Haynes manual says 120k